Linux 開發筆記 - 在 Ubuntu 16.04 使用 Docker Ubuntu 24.04 無法正常更新套件 (apt update）@ Ubuntu 16.04

追蹤到最後，解法應當是把 Host 端的 docker 更新來修正，但一開始很懶，只好遮住雙眼摸魚一下 XD

狀態：

```

$ lsb_release -a

No LSB modules are available.

Distributor ID: Ubuntu

Description: Ubuntu 16.04 LTS

Release: 16.04

Codename: xenial

$ docker run -it ubuntu:24.04 /bin/bash

root@a0f5c64ed667:/# apt update

Get:1 http://security.ubuntu.com/ubuntu noble-security InRelease [126 kB]

Get:2 http://archive.ubuntu.com/ubuntu noble InRelease [256 kB]

Err:1 http://security.ubuntu.com/ubuntu noble-security InRelease    

  The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 871920D1991BC93C

Err:2 http://archive.ubuntu.com/ubuntu noble InRelease

  The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 871920D1991BC93C

Get:3 http://archive.ubuntu.com/ubuntu noble-updates InRelease [126 kB]

Err:3 http://archive.ubuntu.com/ubuntu noble-updates InRelease

  The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 871920D1991BC93C

Get:4 http://archive.ubuntu.com/ubuntu noble-backports InRelease [126 kB]

Err:4 http://archive.ubuntu.com/ubuntu noble-backports InRelease

  The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 871920D1991BC93C

Reading package lists... Done

W: GPG error: http://security.ubuntu.com/ubuntu noble-security InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 871920D1991BC93C

E: The repository 'http://security.ubuntu.com/ubuntu noble-security InRelease' is not signed.

N: Updating from such a repository can't be done securely, and is therefore disabled by default.

N: See apt-secure(8) manpage for repository creation and user configuration details.

W: GPG error: http://archive.ubuntu.com/ubuntu noble InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 871920D1991BC93C

E: The repository 'http://archive.ubuntu.com/ubuntu noble InRelease' is not signed.

N: Updating from such a repository can't be done securely, and is therefore disabled by default.

N: See apt-secure(8) manpage for repository creation and user configuration details.

W: GPG error: http://archive.ubuntu.com/ubuntu noble-updates InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 871920D1991BC93C

E: The repository 'http://archive.ubuntu.com/ubuntu noble-updates InRelease' is not signed.

N: Updating from such a repository can't be done securely, and is therefore disabled by default.

N: See apt-secure(8) manpage for repository creation and user configuration details.

W: GPG error: http://archive.ubuntu.com/ubuntu noble-backports InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 871920D1991BC93C

E: The repository 'http://archive.ubuntu.com/ubuntu noble-backports InRelease' is not signed.

N: Updating from such a repository can't be done securely, and is therefore disabled by default.

N: See apt-secure(8) manpage for repository creation and user configuration details.

E: Problem executing scripts APT::Update::Post-Invoke 'rm -f /var/cache/apt/archives/*.deb /var/cache/apt/archives/partial/*.deb /var/cache/apt/*.bin || true'

E: Sub-process returned an error code

```

硬解：

```

root@a0f5c64ed667:/# apt update --allow-insecure-repositories

...

```

安裝軟體：

```

root@a0f5c64ed667:/# apt install -y --allow-unauthenticated vim wget curl git tree python3-virtualenv 

...

```

結果越裝越痛苦 XD 還是回去看 Docker 官網安裝教學：docs.docker.com/engine/install/ubuntu/#install-using-the-repository 

如此就可以在 Host Ubuntu 16.04 ，正確呼喚出 docker Ubuntu 24.04 來運行，此外，也可以留意 Docker 官方文件建議的 Ubuntu OS 環境已經是 20.04 以上了